Premium
Technique for Monitoring Densification during Chemical Vapor Infiltration
Author(s) -
Lackey W. Jack,
Vaidyaraman Sundar,
Freeman Garth B.,
Agrawal Pradeep K.
Publication year - 1995
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1995.tb08457.x
Subject(s) - chemical vapor infiltration , infiltration (hvac) , materials science , fabrication , chemical vapor deposition , composite material , composite number , nanotechnology , medicine , alternative medicine , pathology
A new technique for studying the progression of densification during the fabrication of composites by chemical vapor nfiltration is presented. The preparation of a carbon‐matrix composite was investigated by momentarily inter‐rupting, at various times, the carbon infiltration process to permit deposition of very thin layers of SiC. Microscopic examination of these layers on a polished cross section per‐mitted determination of the extent of infiltration at various locations within the preform as a function of infiltration time. The technique also distinguishes open from closed pores and provides information on the existence of temperature gradients within the preform.